Upon completion of the new facility, CertainTeed will own and operate five four-wide laminated shingle lines in North America, manufacturing the Landmark series laminated shingles. Currently, ...

CertainTeed Corporation's roofing plant in Shreveport ... XT 30 and CT 20 as well as the popular Landmark Series shingles. In 2009, the plant received an award for Excellence in Energy Efficiency for ...